/*
 * Copyright (C) 2014 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.guide.recipes;

import java.io.IOException;
import java.security.cert.Certificate;

import okhttp3.CertificatePinner;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public final class CertificatePinning {
    private final OkHttpClient client;

    public CertificatePinning() {
        client = new OkHttpClient.Builder()
                .certificatePinner(
                        new CertificatePinner.Builder()
                                .add("publicobject.com", "sha256/afwiKY3RxoMmLkuRW1l7QsPZTJPwDS2pdDROQjXw8ig=")
                                .build())
                .build();
    }

    public void run() throws Exception {
        Request request = new Request.Builder()
                .url("https://publicobject.com/robots.txt")
                .build();

        try (Response response = client.newCall(request).execute()) {
            if (!response.isSuccessful()) {
                throw new IOException("Unexpected code " + response);
            }

            for (Certificate certificate : response.handshake().peerCertificates()) {
                System.out.println(CertificatePinner.pin(certificate));
            }
        }
    }

    public static void main(String... args) throws Exception {
        new CertificatePinning().run();
    }
}
